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Message-Id: <199804290713.AAA10866@hub.freebsd.org>
Date: Wed, 29 Apr 1998 00:13:25 -0700 (PDT)
From: archer@lucky.net
To: freebsd-gnats-submit@FreeBSD.ORG
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Subject: gnu/6448: grep doesn't flush its output.
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>Number:         6448
>Category:       gnu
>Synopsis:       grep doesn't flush its output.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Wed Apr 29 00:20:01 PDT 1998
>Last-Modified:
>Originator:     Alexander Litvin
>Organization:
Lucky Net Ltd.
>Release:        3.0-CURRENT
>Environment:
FreeBSD grape.carrier.kiev.ua 3.0-CURRENT FreeBSD 3.0-CURRENT #72:
Tue Apr 28 14 :18:19 EEST 1998  archer@grape.carrier.kiev.ua:/usr/src/sys/compile/GRAPE i386
>Description:
grep uses fwrite() to write its output. Without flushing stdin it
means that the following:
$ tail -f foo | grep bar | grep zu
won't work.
>How-To-Repeat:
Run 'grep foo | cat'. Until 'grep' finds EOF, nothing will be read
(and written to the screen) by 'cat'.
>Fix:
In prline(), gnu/usr.bin/grep/grep.c, stdout should be flushed after
fwrite().
>Audit-Trail:
>Unformatted:

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